The parents of a murdered San Diego-area teenager are joining forces with a state Assemblyman to crack down on violent sex offenders who prey on children.

Republican Assemblyman Nathan Fletcher has introduced “Chelsea’s Law” named after Chelsea King. The 17-year-old’s body was found early last month, after days of searching. The man arrested for her murder has a previous conviction for child molestation. The bill targets those convicted of committing violent sex crimes against children under 18. Some convicts would serve life sentences with no possibility of parole, others would serve longer prison sentences and those released would be on lifetime G.P.S monitoring. Chelsea’s father Brent King says it’s all needed to better protect the public.

“These offenders cannot be rehabilitated. They do not deserve a second chance. They prey on the unprotected and fill our communities that we live in with fear.”

The bill would also prohibit registered sex offenders from visiting parks where children regularly gather. Assemblyman Fletcher could not provide a cost estimate of the measure which would likely further strain California’s already packed prisons. It will face its first committee hearing next week.